Using HUD in Virtual Reality with Unreal Engine 4 - bright developers
Creating 3D Widget Interaction | Unreal Engine Documentation
Creating 3D Widget Interaction | Unreal Engine Documentation
UMG Widget Interaction In VR - UE4 AnswerHub
3d Widget communication problem — polycount
3D widget mouse cursor vis and control in VR - UE4 AnswerHub
VR Spectator Control
Can't click 3D widget in VR - UE4 AnswerHub
VR - Can't interact with 3D widget with the left motion controller - UE4 AnswerHub
3d Widget communication problem — polycount
How to make VR Interactable UI Widgets in Unreal Engine 4 - Couch Learn
UX Tools 0.10 Release: Tap to Place, Menus, and UMG support, now available in the UE4 Marketplace - Dr. Ware Technology Services - Microsoft Silver Partner